Reinforced concrete construction.



H. RUSCH. NNTNTONNBD CONCRETE CONSTRUCTION. APPLICATION FILED AUG. 8, 1913. Lal 3199172. Patented Sept. 29, 1914,

2 SHEETS-SHEET l.

H. RUSCH. REINFORCED CONCRETE CONSTRUCTION.

APPLGATION FILED AUG. 8, 1013.

l, l l 1,972. l Patented Sept. 29, 1914.

Z SHEETSSHEBT 2.

UNITED STATES PATENT OFFICE.

HENRI BUSCH, 0F ST. ILOUIS, MISSOURI.

i *l REINFORCED CNCBETE CONSTRUCTION.

struction including a floor and a series of beams integrally .united to form a monc- 11th1c structure, and, provided with a novel and superlor form of metallic reinforcement whereby the concrete is strengthened, and` whereby the plaster laths ma be supported@ Another object is to provi e an improved concrete floor .construction including aconcrete fioor and a number of concrete beams having monolithic connection with the floor, in combination with a. metallic reinforcing late extending along'thelovver edge: of each eam, and a number of reinforcing arms `l rigidly connectedvvith said plate and em?- bedded inthe beams eiectively totr'ansmit all stresses from the plate andother rein' forcements into stronger portions of the concrete beams. i lvA. further object is to provide a concrete floor construction comprising a number of Vconcrete beams'provided Witli metallic reinforcements, and means in connection vvithv said reinforcements for supporting the laths and the plaster.

.Other objects will appear from the follovving description, reference being made to the accompanying drawings in which I have illustrated one embodiment of the invention, and in which*- Figure l is a plan view of a series of forms adapted for use in producing iioors in -accordance With my invention', illustrating the reinforcing elements su ported by and engaging with the forms beijore the placing of the concrete. Fig. 2 is a sectional View, enlarged with respect to Fig. l, and may be considered as taken on the vline 2-2 of Fig. 1. IFig. 3 'is a side elevation of one of the reinforcing. plates before being placed in connection with the forms. Fig. 4 is a sectional view, approximately on the scale of Fig. 2, illustrating the completed structure, including the lath material, the means for attaching the lath material to the beams and Specification of LettersrPatent. Application mea August s, 1913. serial No. 783,844.

Patented Sept. 29,1914.

reinforcement, and the fire-proof plaster supported b y the lath material to protect the lath material and reinforcing late from iire, etc. Fig. 5 illustrates `one o the forms being removed from the structure after the concrete has hardened. Fig. 6 is an enlarged end elevationv of one of the reinforcing plates. Fig. 7 is a longitudinal secs tional view of a portion of one of the reinforcing plates..

The walls l may be of any suitable incombustiblev material, and the constructionV thereof isl immaterial. The specific structure ofthe Walls constitutes no part of the present invention.

In` erecting structures embodying my invention I utilize forms of sultable constructionand arrangement, and, in the embodiment shown, each form consists of a frame ofv strong construction, with a sheet metal wall, and accessories for holding the form in proper shape and for coperatively engaging the reinforcing elements. The frame of eachI form consists of the pivotally united angle iron frame parts 2, the frame parts on opposite sides of the form being pivoted by bolts 3 which pass through overlapping parts of the angle irons. The lower en .s l the frame parts are connected and braced by a cross-member 4, held in position by .bolts 5 which are removable in order to permit coni-y pression or reduction of the fori-ns so that they may be removed after the concrete has hardened. The frame parts support lthe form Walls 6 which, in the form shown, are

'of corrugated sheet metal, but vvhich may be of any other suitable construction according4 to preference.

In constructing iioors a number of forms are arranged end-to-fnd in a long1tud1nal series, as shownin Fig. l in which the longitudinal series A consists of three forms arranged end-to-end betweenA the 'Walls 1. Other longitudinal series of forms B, C, and D, ctc., are similarly arranged, the several series being paralleland substantially equallyl spaced. The forms may be'supported by any suitable means, such, for lnstanee, as by posts and struts, the use and arrangement of which are too well known to require illustration or description. Each form supports p two angular plates 7 which extend laterally from the lower edges thereof. The plates on the several forms of each series abut end-tou end When the forms are assembled for use. The plates 7 are provided with a number of y ries of forms.

holes 8 which are preferably spaced equal distances apart so that the reinforcing plates may be readilv placed in position and inter locked with the several series of forms,

The reinforcing plates are positioned between adjacent series of'forms before the concrete is placed upon or between the forms. Each reinforcing plate 9 is cut to form a number of flexible portions 10 which,

when bent laterally at right angles to the plate, constitute projections which will extend through the holes 8 in the plates 7, and thereby lock the forms of each series to the forms of adjacent series. The plates 9 thus close the lower parts of the spaces between adjacent series of forms, and constitute supports for the concrete between adjacent se- A number of flexible arms or any other kind of shear reinforcements 11 are rigidly attached to the upper side of each plate 9, and when originally attached lie flat upon the plate 9, but when said plate is positioned, and before the concrete .is placed thereon, said arms are bent or flexed to position substantially as shown in Figs. 3 and 7, that is at a suitable angle, preferably obliquely, with respect to the plate. Preferably these arms are arranged in rows, and the arms of each row "are closest together near the'ends of the plate and are separated by gradually increasing distances toward the middle of the plate, as illustrated in Fig. 3. Relatively a considerable part of each plate about eouidistant from the ends thereof is not provided with arms. so that the stress at 'the central portion is transmitted tov the structure near the ends of the plates which are also near the ends of the beams. After the plates 9 have been locked in position, and after the arms 11 have been bent to the position required, a quantity of concrete, say a layer about one inch in depth, more or less, is placed between adjacent series of .forms upon each of 'said plates, andthe reinforcing` rods v12 are placed upon said layer of concrete between the rows of arms 11.. after which the remainder of the concrete is'V placed between and 'upon the forms, so as to form the floor monolithically with the beams. Above t e? forms a reinforcement 13, preferably of woven wire, 'is embedded in the floor strucf ture below the ends of the arms 11. The

surfaceof the floor is finished a slight dis f tance above the ends of the arms 11. After the concrete has hardened' the forms are re moved by releasing one end of the brace connections 4, and slightly reducing the distance or dimensions between the sides of the forms, as shown in Fig. 5.

After the forms have been 'removed the metal lath 14 is placed against the lowerf sides or edges of the beams, and the projecfj Itions 10, which extend through the open-t ings in the lath material, are clamped under the lath material, thereby rigidly locking or uniting the lath material with the reinforcement and with t e beams. The incombusti ble plaster may t en be applied in the usual manner and to any desired thickness.

From the foregoing it will be seen that the plates 9, which constitute part of the reinforcement for transmitting all of the stresses into the end portions of the concrete beams, are utilized in connection with the forms to hold the lconcrete during the formal tion of the structure; and that, in addition to subserving their functions as supports for the concrete during the formation of the structure and as reinforcements for the concrete after the structure is com leted, said plates also interlock with andhofd the forms in proper position during the formation of the structure. Attention is also invited to the fact that, after the concrete structure has been formed, the metal lath is Alocked or united with the reinforcements by 'means f the projections. 10, and that all ofthe reinforcements are protected and shielded from fire, ete., by the incombustible plaster.

I am aware .that there may be various modifications of my invention, as well as changes in the arrangement of the parts, without departure from the -spirit adscope of the invention. It will be understood that I contemplate such modifications and changes as will completely adapt the invention to various requirements and'preferences.

l/Vhatl claim and desire to secure bylletters Patent of the United States'is- 1. The'combination with a concrete beam, of a inetal plate bonded to the exterior lower side of said beam by the hardening action of the concrete, means on said plate for en,- gaging the forms which shape the side surfaces of said beam during the fdrmation of the beam, a plurality of obliquely disposed f and separated from 'said plate 'by a layer of concrete, substantially as described.

2. The combinationwith a concrete beam, of a metal plate bonded to the exteriorlower side of said beamiby the hardeningaction of the concrete, means on said plate -for engaging the forms which shapethe side sur- Aaces of said beam during the formationof said beam, a plurality of arms between the side edges of said plate embedded'in .the.con crete 'and rigidly united with said plate, and a rod separate from said late-'embedded in the concrete between sai arms above saidlplate and separated from saidplataby a layer of concrete, substantially as described. i

3. The combination with a serie'slof coli crete beams monolithically unite l A I wittgeach other, metal plates of equal wid h wi h the lower sides of said beams bonded against the exterior lower sides of said beams by the hardening action of the concrete, a row of arms rigid with said plates near each side edge thereof and embedded inthe concrete, projections rigid with said plates, and metallic lathing supported by said rojections between said plates, substantially as de scribed.

4. The combination with a series of monolothically united concrete beams, a metallic plate of equal width with then under side of each beam bonded against the `exterior under side of said beam by the hardening acif? tion of the concrete, parallel rows of arms rigid with said plate and embedded in said concrete, rods embedded in said concrete between said rows of arms and separated from said plate by a part of the concrete, and projections rigid with said plates for the purpose set forth, substantially as described.

5. The combination with a series of monolithically united concrete beams, a metal plate of e ual width with the lower side of each beam onded against the exterior lower side of each beam by the hardening action of the concrete, rows of arms rigid with each plate and embedded in the concrete, rods embedded in the concrete parallel with eaeh plate and separated from each plate b a layer of concrete, projections integral wit i said plates, metallic lathing between said plates engaged and supported by said projectons, and plaster supported by saidv lathing, substantially as described. l

In witness whereof I have signed this specification in the presence of two subscribing witnesses this 6th day of August, 1913.

, HENRI RUSCH. In the presence of- JOHN T. CRAvnN, J. D. RIPPEY. 

